Home / 28,312.56-39,069.81-15,736.50

Finding the Fourth Proportional to 28,312.56, 39,069.81 and 15,736.50

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Solution

The fourth proportional to 28,312.56, 39,069.81 and 15,736.50 is: 21,715.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.56 : 39,069.81 = 15,736.50 : x
  2. Step 2: Convert to fraction form
    28,312.56/39,069.81 = 15,736.50/x
  3. Step 3: Cross multiply
    28,312.56x = 39,069.81 × 15,736.50
  4. Step 4: Simplify right side
    28,312.56x = 614,822,065.07
  5. Step 5: Solve for x
    x = 614,822,065.07/28,312.56
  6. Step 6: Final answer
    x = 21,715.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.